SE8700189D0 - PUMP ELEMENT AT A FUEL INJECTION PUMP - Google Patents

PUMP ELEMENT AT A FUEL INJECTION PUMP

Info

Publication number
SE8700189D0
SE8700189D0 SE8700189A SE8700189A SE8700189D0 SE 8700189 D0 SE8700189 D0 SE 8700189D0 SE 8700189 A SE8700189 A SE 8700189A SE 8700189 A SE8700189 A SE 8700189A SE 8700189 D0 SE8700189 D0 SE 8700189D0
Authority
SE
Sweden
Prior art keywords
fuel injection
pump
piston
cylinder
chamber
Prior art date
Application number
SE8700189A
Other languages
Swedish (sv)
Other versions
SE455627B (en
Inventor
B Gadefelt
Original Assignee
Saab Scania Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Saab Scania Ab filed Critical Saab Scania Ab
Priority to SE8700189A priority Critical patent/SE455627B/en
Publication of SE8700189D0 publication Critical patent/SE8700189D0/en
Priority to PCT/SE1988/000013 priority patent/WO1988005498A1/en
Publication of SE455627B publication Critical patent/SE455627B/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/20—Varying fuel delivery in quantity or timing
    • F02M59/24—Varying fuel delivery in quantity or timing with constant-length-stroke pistons having variable effective portion of stroke
    • F02M59/26—Varying fuel delivery in quantity or timing with constant-length-stroke pistons having variable effective portion of stroke caused by movements of pistons relative to their cylinders
    • F02M59/265—Varying fuel delivery in quantity or timing with constant-length-stroke pistons having variable effective portion of stroke caused by movements of pistons relative to their cylinders characterised by the arrangement or form of spill port of spill contour on the piston
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • F02M45/12—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship providing a continuous cyclic delivery with variable pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/20—Varying fuel delivery in quantity or timing
    • F02M59/34—Varying fuel delivery in quantity or timing by throttling of passages to pumping elements or of overflow passages, e.g. throttling by means of a pressure-controlled sliding valve having liquid stop or abutment

Abstract

Pump component in a fuel injection pump in which fuel injection is controlled by at least one piston (3) which is movable in a cylinder (2) and which defines above the piston a chamber or space (12) in which fuel injection pressure is generated. The purpose of the pump component is to enable the fuel injection pressure to build-up relatively slowly in the chamber (12), preferably at relatively low engine speeds, so as to reduce the so-called ignition delay. The invention is mainly characterized in that the cylinder wall incorporates at least one through-passing bore (14) through which fuel is pressed during upward movement of the piston (3) in the cylinder (2).
SE8700189A 1987-01-20 1987-01-20 PUMP ELEMENT AT A FUEL INJECTION PUMP SE455627B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE8700189A SE455627B (en) 1987-01-20 1987-01-20 PUMP ELEMENT AT A FUEL INJECTION PUMP
PCT/SE1988/000013 WO1988005498A1 (en) 1987-01-20 1988-01-19 A pump component in fuel injection pumps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8700189A SE455627B (en) 1987-01-20 1987-01-20 PUMP ELEMENT AT A FUEL INJECTION PUMP

Publications (2)

Publication Number Publication Date
SE8700189D0 true SE8700189D0 (en) 1987-01-20
SE455627B SE455627B (en) 1988-07-25

Family

ID=20367211

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8700189A SE455627B (en) 1987-01-20 1987-01-20 PUMP ELEMENT AT A FUEL INJECTION PUMP

Country Status (2)

Country Link
SE (1) SE455627B (en)
WO (1) WO1988005498A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1294439B1 (en) * 1997-06-10 1999-03-24 Gino Parenti INJECTION PUMP FOR INTERNAL COMBUSTION ENGINES WITH DIESEL CYCLE

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE572711C (en) * 1931-07-03 1933-03-22 Maschf Augsburg Nuernberg Ag Fuel pump
DE916605C (en) * 1951-09-16 1954-08-12 Augsburg Nuernberg A G Zweigni Method of fuel injection subdivided into pilot and main injection by means of an injection pump
DE2837297A1 (en) * 1978-08-26 1980-03-06 Daimler Benz Ag FUEL INJECTION PUMP FOR AIR COMPRESSING INJECTION COMBUSTION ENGINES

Also Published As

Publication number Publication date
SE455627B (en) 1988-07-25
WO1988005498A1 (en) 1988-07-28

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